Question

Give one example of formation of precipitate during an chemical reaction

Answer 1

When AgNO3 reacts with NaCl gives AgCl as precipitation and NaNO3

Answer 2

when we react sodium sulphate and barium chloride then a double displacement reaction takes place and a white precipitate of barium sulphate gets deposited on the surface of beaker.

Na2SO4 + BaCl2 = BaSO4 + 2NaCl

hope this helps you...